another Game Center with Apple ID problem

hello everyone, i have read all game center problems but i couldn't fix mine.

Here is the problem:

I have in my email account (vnt@hotmail.com) one apple ID, but in this ID there are two different accounts with different names (vs & djvs) in Game Center. The "djvs" i made at the beggining and the "vs" that i made later...

I restored my iphone yesterday and when i typed the apple id it logged me in the game center with my djvs name whitch is empty as i made it when i first got the iphone and it was like an experiment. How can i log in with my other name from the same email? is there a solution?

thanks